Help in identifying IC component

[cmaier]

I have an IC component that is giving us problems on a back plane. It looks like a 6 pin soic or maybe a sot23-6. The top marking is ATFAU with a straight hoziontal line over the T. I have uploaded a photo of the part. the board is made by Tyan/Mitac so it is coming from Asia.

Can anyone help identify who is the manufacturer? And can I purchase it anywhere?

 

[cowboybob]

Have no idea, but:

You say it is "giving us problems". Why is it you feel that it needs to be replaced?

Because that implies that you know what it does in the circuit since you feel it is no longer doing it (whatever that is)...

That knowledge might lead us to a suitable substitute (if not an exact replacement).

 

[cmaier]

Hi Cowboybob:
This is on a backplane in multiple locations, one has burned up. We believe it is a LED driver chip. We have about a hundred boards that we would like to repair if we could purchase/find the chip.

 

[MikeMl]

Hi Cowboybob:
This is on a backplane in multiple locations, one has burned up. We believe it is a LED driver chip. We have about a hundred boards that we would like to repair if we could purchase/find the chip.

If you have 100 boards with the same failure, it sounds like you need to redesign the board, not just replace parts...

 

[cowboybob]

Is a schematic of that backplane (or at least that portion of the backplane where the chip is located) available?

Here's a 6 pin (SMD type, not what you asked for) LED driver:

https://www.electro-tech-online.com/custompdfs/2013/02/snva314a.pdf

but, of course, no way to know at this time if the pin-outs are correct.

Or, for that matter, if that is even the function of the chip in the picture you provided,

And MikeMI has a point...

 

[Dean Huster]

Then again, if you have hundreds of those boards and each has bunches of those chips, it would seem that dedicating several of the boards to service as "hangar queens" and harvesting them for good chips to get the remainder of the boards going would be prudent.